James b



(No Model.)

J.- R; WADE.

STEAM TRAP.

No. 378,482. Patented Febl 28,v 1888 n. pneus Pnnwumognpmr. wnhiwm u4 c.

lllnrrnn drains Parana Ottica.

JAMES R. WADE, OF ST. LOUIS, MISSOURI.

STEWIHTRF.

SPECIFICATION forming part of Letters Patent No. 378,482, dated February 28, 1888.

Application led June Q8, 1887. Serial No. 242,814.

To all whom it may concern.-

Be it known that I, JAMES R. VADE, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have in'- vented certain new and useful Improvements in Steam-Traps and in the Mode and Manner of their Operation; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same.

Figure l represents a sectional view of my invention, and Fig. 2 a plan View of eXpansion-plate.

in the drawings, A is the valve-stem.

Bis the valve.

O is the valve-seat.

D is a brass nipple used as the seat of the valve at one end and the trapdischargc connection at the other.

Fis the brass expansion-plate through which the valve-stem is screwed, and which may be adjusted on the outside of the trap by the wheel L.

G G and II II are bolts by which the expansion-plate is fastened at both ends to the body ofthe trap, thus compelling the expansion to spring the plate and close' the valve.

I I are two caps screwed on threads of the pipe N N, 'forming the body of the trap.

M is a fitting known as a cross, to which N N are screwed, making the body ofthe trap complete.

J is the valve trimmings.

K is the stuffing-box on valve stem.

L is the wheel by which the valve is adjusted.

My invention is carried into eii'ect in the following manner: The trap consists of steampipe and iittings applied in connection with a brass expansionplate, which has absolute control of the valve. As the plate expands it moves the valve to its seat, and as the plate contracts it moves the valve in the opposite direction, which allows the water to pass from the trap through the discharge, the opening in the latter being governed by the change of (No model.)

temperature in the brass expansion-plate; or, in other words, the opening in the discharge will be according to the amount of condensation liowing to the trap.

The advantages of the trap are as follows: The valve is in the bottom of the trap. Avery large valve is used, and as soon as the temperature ofthe trap cools, due to an accumulation ofcondensation, the valve is opened aceordin g to the change of temperature, :and the water is allowed to flow from the trap as fast as it accumulates. This trap (which is operated entirely by the brass expansion-plate) is anti-freezing, for as the trap cools the valve opens, and as the discharge is from the bottom there can be nothing left to freeze when steam is turned off. To set the trap, open the valve wide, open by means of the valve-stem A until steam blows through freely, then close the Valve down on its scat. This will be all the attention required, as the expansionplate will then have entire control of the valve. The dotted circle in thc side ofthe cross between F and B is theinlet. The outletis in the brass nipple D. In connecting the trap it should be set level.

Vhat I claim as new, and desire to secure by l. The coxnbinatiomwith the fitting M, of the pipes N N, secured to either side thereof and provided with caps on their outer ends, the eX- pansion-plate secured to the pipes, the valve, and the valve-stem, the latter made adjustable in the expansion-plate, substantially as shown and described.

2. rIhe combinatiomwith the litting M, pro-` 

